Audio information transforming method, video/audio format, encoder, audio information transforming program, and audio information transforming device

An audio information transforming method applied to a video/audio format in which a screen includes a plurality of objects and each object has video information, position information, and audio information, said method comprising the steps of:

• virtual listening point setting of setting a virtual listening point at a position different from a basic listening point that is set as a position at which a listener listens to an audio;
• relative velocity calculating of calculating a relative velocity between the virtual listening point and the object;
• and
• audio frequency transforming of executing an audio frequency transformation based on the relative velocity to add a Doppler effect to the audio information at the virtual listening point,
• said format comprising:
• velocity information of an object, said object is one of objects included on a screen;
• velocity information and direction information of a scene which is replayed on the screen;
• and
• reduced scale information of the screen every scene.

An audio information transforming method applied to a video/audio format in which a screen includes a plurality of objects and each object has video information, position information, and audio information, said method comprising the steps of:

• virtual listening point setting of setting a virtual listening point at a position different from a basic listening point that is set as a position at which a listener listens to an audio;
• relative velocity calculating of calculating a relative velocity between the virtual listening point and the object;
• and
• audio frequency transforming of executing an audio frequency transformation based on the relative velocity to add a Doppler effect to the audio information at the virtual listening point,
• said encoder for encoding:
• velocity information of an object, which is one of objects included in a screen;
• velocity information and direction information of a scene;
• and
• reduced scale information of the screen every scene.

An audio information transforming method applied to a video/audio format in which each scene that is replayed on a screen has video information and audio information, and the scene has velocity information and direction information based on which a background is moved, said method comprising the steps of:

• virtual listening point setting step of setting a virtual listening point at a position different from a basic listening point that is set as a position at which a listener listens to an audio;
• relative velocity calculating step of calculating a relative velocity between the virtual listening point and a background based on the velocity information and the direction information of the background;
• and
• audio frequency transforming step of transforming an audio frequency based on the relative velocity to add a Doppler effect to the audio information at the virtual listening point,
• said format comprising at least one of:
• velocity information of an object, said object is one of objects included on a screen;
• velocity information and direction information of a scene which is replayed on the screen;
• and
• reduced scale information of the screen every scene.

An audio information transforming method applied to a video/audio format in which each scene that is replayed on a screen has video information and audio information, and the scene has velocity information and direction information based on which a background is moved, said method comprising the steps of:

• virtual listening point setting step of setting a virtual listening point at a position different from a basic listening point that is set as a position at which a listener listens to an audio;
• relative velocity calculating step of calculating a relative velocity between the virtual listening point and a background based on the velocity information and the direction information of the background;
• and
• audio frequency transforming step of transforming an audio frequency based on the relative velocity to add a Doppler effect to the audio information at the virtual listening point.
• said format comprising at least one of:
• velocity information of an object, said object is one of objects included on a screen;
• velocity information and direction information of a scene which is replayed on the screen;
• and
• reduced scale information of the screen every scene.